A METHOD TO DETERMINE A TRANSMISSION CORRECTION FOR ELECTRON SPECTROMETERS USING SYNCHROTRON-RADIATION

The transmission function of a hemispherical electron spectrometer, th e SES-144 (Osborne et al., Synchrotron Radiat. News, 7 (1) (1994) 25), has been determined for pass energies of 10, 20 and 50 eV in the kine tic energy range 7-60 eV. The method is based on the measurement of th e intensity ratio between photoelectron lines with varying kinetic ene rgies and the corresponding constant kinetic energy Auger lines using different photon energies of synchrotron radiation. With the aid of th e obtained transmission curves, the ''standard'' Auger line intensitie s of the Xe N4,5OO Auger spectrum have been determined. Using these in tensities as reference values, the transmission curves of other electr on spectrometers can conveniently be found.